baber/WOPTO huggingface dataset:
Patent GB-1170796-A (GB)
Title: Improvements in or relating to Microtomes
Inventor: DOLLHOPF FRANK LEO
IPC: G01N1/42
Filed: 1967-02-17
Abstract: 1,170,796. Microtomes. SHANDON SCIENTIFIC INDUSTRIES Ltd. Feb. 16, 1968 [Feb. 17, 1967], No. 7744/67. Heading G2J. A microtome has a specimen holder 22 and a knife holder 42 contained within a box 10 made of plastics insulating material and having conduits 58, 59 through which a cold dry relatively inert coolant, such as nitrogen, can be introduced into the chamber in either its gaseous or liquid state so as to fill the chamber with cold dry gas and to flush air and water vapour from the chamber through the bleed passage. The knife holder has a trough 54 for receiving liquid nitrogen and a platinum resistance thermometer and resistance heater 56. The specimen holder Fig. 3 (not shown) also has a trough (28), a thermometer (31) and a heater (34<SP>1</SP>). A solenoid valve in each conduit and the resistance heaters are connected to a suitable automatic control unit and controlled by the thermometers to maintain a selected temperature within the box. A syringe 53 is provided to maintain an adequate supply of liquid in the boat 52 attached to the knife. The operation of the microtome is viewed through a transparent top cover 18 provided with a heater 20 to stop condensation. The specimen holder has an attachment member which extens through the wall of the box, sectioning movement being permitted by a flexible polyethylene or silicone rubber diaphragm 38.
Patent GB-397223-A (GB)
Title: Improvements in or relating to advertising and display devices
IPC: A47F5/11
Filed: 1932-03-16
Abstract: 397,223. Advertising-models. MATHEWS & CO., Ltd., T. and JARVIS, T., Sandiacre Street, Leicester. March 16, 1932, No. 7810. [Class 3 (ii).] In an advertising and display device comprising a body part which when erected for use presents an angular front and is constructed to fold flat, a part is connected by hinges to the top edges of the angular front and is itself hinged so as automatically to form a top platform when the body part is erected and to be capable of folding flat automatically when the body part is folded flat. As shown in Figs. 1, 2, 4 and 6, the body part 1 consists of a sheet of cardboard which is scored so that it can be bent to a V or rightangular shape having side portions 3, and the platform, which is integral therewith, comprises sections 4, 4a hinged at 5 to the portions 3, the section 4a overlapping the section 4 which is scored at 6. The sections are connected to each other between the hinge 6 and the hinge 5 of the section 4a so that when the portions 3 are brought together, the sections are turned upwards on the hinges 5, Fig. 6, and when the portions are disposed angularly as in Fig. 1, the platform straightens out horizontally. A display member 7 is hinged to the section 4a so as to stand across the angle formed by the portions 3 and to fold flat against the body part 1 when this is folded flat, Fig. 6. A member 8, hinged to the member 7, is slotted at 9 so as to engage over the sections 4, 4a, Fig. 4, to lock them together and thereby prevent the platform folding upwards and also holding the display member vertical. The body part 1 may be folded upon a single score but preferably it is scored so that the sides 3 fold on a single score 10 at the lower part of the body to form a corner 12 and on a triple score 11, 11a, 11b at the upper part to form a re-entrant angle 13. The upper part of the body 1 may represent cartons or the like. A modification, Figs. 8 and 12, comprises duplicate portions 3a, 23 and 3a, 22 each corresponding to the portions 3, 3, Fig. 1, and being hinged together by a portion 24. A display member 26 is secured to a part 27 and is provided with tabs 29 which engage in slots 28, 28a in the sections 4, 4a when the portions 22, 23 assume the desired angular position. In a further modification, Figs. 13 and 14, a parallelogram structure is provided comprising a front 30, connected by hinged sides 31 to the body parts 3, and a top 32 having a flap 33 which can be turned down and tucked in to maintain the structure in a projected position to represent cartons or the like. A similar structure 34 may be attached to or formed upon the display member 7a.
Patent GB-276041-A (GB)
Title: Improvements in and relating to diaphragm pumps
IPC: F04B43/02
Filed: 1926-03-22
Abstract: 276,041. Denholm, T. D. March 22, 1926. Diaphragm pumps.-In a diaphragm pump a hollow plunger E is connected to the diaphragm A with lost motion so that during the first portion of each stroke only the plunger moves. The inner edge of the diaphragm is clamped between plates C, e, and the outer edge between chambers B, D. The plunger carries a lift valve F and is connected by rods g to a crosshead G carrying a double rack S which engages two oscillating toothed quadrants. The connection between the plunger and diaphragm comprises two rods j passing through the plates e, C and lugs k on the plunger. The rods are fixed to the plates C, e by collars l and nuts m and slide through the lugs k. The amount of lost motion between the plunger and diaphragm may be adjusted by nuts n on the rods. The pump may be used as a suction pump by delivering through an outlet U, or as a force pump by closing the outlet U and delivering through a port V. An air vessel W is arranged above the chamber B. Specification 276,283 is referred to.
Patent GB-589481-A (GB)
Title: Improvements in scouring implement
IPC: A47L13/07
Filed: 1945-03-28
Abstract: 589,481. Pan scourers. KINGMAN, R. B. March 28, 1945, No. 7846. Convention date, Aug. 30, 1944. [Class 28 (ii)] A scourer comprises a seamless hollow, resilient, liquid-impervious body 10 having a springy, fibrous cushion 12 and an external coating of abrasive grit 11. The body 10 is preferably formed from a cured, viscous composition of copolymers of vinyl chloride and vinyl acetate, the former predominating and having, e.g., 75-85 per cent. vinyl chloride, and which is applied in successive layers over the cushion 12. The body is rolled in the grit before drying. Alternatively, Fig. 4 (not shown), the grit is held in suspension in the composition.
Patent GB-1235801-A (GB)
Title: A process for the manufacture of rapidly-disintegrating solid dosage unit forms
Inventor: BENTHOLM SVEND A R
IPC: A61J3/10
Filed: 1969-02-13
Abstract: 1,235,801. Rapidly disintegrating dosage unit forms. ORGANON LABORATORIES Ltd. 13 Feb., 1969 [15 Feb., 1968], No. 7858/ 69. Heading A5B. A rapidly disintegrating dosage unit form comprises as disintegrating agent an alkali metal or ammonium salt of carboxy-methyl cellulose of a polymerisation degree (DP) between 100 and 2000 and a substitution degree (DS) between 0.02 and 0.17 at a DP of 100 and a DS of between 0.02 and 0.57 at a DP of 2000. Examples are given of compositions comprising as active ingredients acetyl salicyclic acid; oestriol; sodium bicarbonate, borax and thymol; sulphamethizol; and cortisone-21- acetate.
Patent GB-633432-A (GB)
Title: Improved valve apparatus for milking machine installations
IPC: A01J5/04
Filed: 1947-03-22
Abstract: 633,432. Fluid-actuated valves. FARM EQUIPMENT CO., Ltd., and HUNWICK, L. W. March 22, 1947, No. 7905. [Class 135] A vacuum regulating valve for milking machine installations has a casing A divided into two compartments C, D by a partition B having a valve seat aperture b, the compartment D being connected to a source of vacuum by a connection F and the compartment C being connected to a milking pipe-line or a branch thereof by a connection E and containing a lift valve R urged away from the valve seat by an adjustable spring O. The valve R has grooves R<SP>1</SP> or is otherwise arranged to allow limited communication between the compartments C, D when the valve is closed. The spring O is adjusted by a nut P on a threaded part of the valve spindle N which also carries a lock-nut P<SP>1</SP>. The spindle is guided in a cover-plate J held by a ring nut K. The lift of the valve is limited by an enlarge ment n engaging a guide M.
Patent GB-581433-A (GB)
Title: Improvements in paper perforators of the hand-lever and punches type
IPC: B26F1/36
Filed: 1945-03-29
Abstract: 581,433. Paper punches. SHANNON, Ltd., and POSNER, B. B. March 29, 1945, No. 7924. [Class 31 (ii)] A punch for forming a plurality of holes in papers is described for the production of two holes by means of punches b formed of punching pegs b<3> attached to steel hook-formations b<4> which engage an eccentrically mounted shaft e operated by a lever c. The hooks b<4> can slide along the shaft e but move vertically therewith. The pegs b' are guided by apertures in a bracket f built of three layers of strip steel formed with guide holes f<7>, f<8>, with a cutting hole f<9>, and with a positioning seat f<10>, for the papers. The base strip f<2> is formed with locating pegs g, g<2> for engaging holes h, h<2> in the top plate a<3> of the box-base a, and the bracket f is finally fixed in the required position by a screw h'. The shaft c is controlled by a spring d anchored at d' to it and at d' to the box base. The papers are positioned by the aid of a guide n which is adjustable transversely and is formed with a series of notches either one of which can be spring-pressed to engage a fixed tooth. The box is provided with a window m so as to enable the operator to see when the wastage needs clearing, and the spring d can be detached from the anchor d' for transport purpose.
Patent GB-557987-A (GB)
Title: Improvements in the manufacture of artificial wood compositions
IPC: C08L95/00
Filed: 1942-06-11
Abstract: 557,987. Artificial wood bituminous compositions. GOODWIN, H. June 11, 1942, No. 7975. [Class 70] Artificial wood compositions, e.g. for paving blocks, tiles, panelling or miscellaneous articles, comprise fluxed or unfluxed bitumens which may be asphaltic, residuum, blown, or coal tar pitch, together with sawdust and an inorganic filler, e.g. powdered limestone, slate dust or silica, e.g. in percentages 30, 40, 30 respectively. The sawdust and filler may be mixed, added slowly to the melted bitumen with constant stirring, and the mixture moulded under pressure which may be sufficient to crush the fibres and/or prevent subsequent distortion due to " cold flow." Pigments, and carborundum may also be incorporated.
Patent GB-581949-A (GB)
Title: Improved method of preparing lithium hypochlorite
IPC: C01B11/06
Filed: 1944-04-28
Abstract: Solid lithium hypochlorite containing an amount of water substantially less than the monohydrate, is prepared from a solution or a hydrate of lithium hypochlorite by drying under an absolute pressure not exceeding one-tenth of the vapour pressure of water at the temperature employed.  Temperatures within the range 20-70 DEG C. may be used, though it is preferred to operate below 60 DEG C.  A small amount of lithium hydroxide or other alkali hydroxide may be added to the lithium hypochlorite composition before the drying thereof.  Examples are given, two of which instance the use of tertiary butyl hypochlorite in preparing the lithium hypochlorite. Reference to the prior art discloses the production of LiOCl by chlorinating a LiOH solution or suspension and separating the LiOCl from the lithium chloride by treatment with an aliphatic alcohol to form a hypochlorite compound which is readily separable from the LiCl, and subsequently treating the hypochlorite compound with LiOH to obtain LiOCl.  Specifications 581,944, 581,945 and 581,948 are referred to.
Patent GB-677828-A (GB)
Title: Electrical wave transmission networks
IPC: H03H7/07
Filed: 1950-03-31
Abstract: 677,828. Impedance networks. WESTERN ELECTRIC CO., Inc. March 31, 1950 [March 31, 1949], No. 8119/50. Class 40 (viii). An impedance network comprises two T-sections in parallel, one consisting of two equal series capacities C1 and an interposed shunt containing an inductance ¢L3, the other consisting of two equal series inductances L1, and a shunt containing a capacity 2C1, the resonant frequency of a circuit consisting of the shunt branch containing ¢ L3 in series with the capacities C1 in parallel, being equal to that of the shunt branch containing 2C1 in series with the inductances L1 in parallel. If a parameter " b," which equal 4#f c RC 1 , where f c  is the frequency at which the network phase shift is 180 degrees and R is the non-reactive image impedance of the network, falls between 2 and #2, this network can be derived from a symmetrical lattice prototype without calling for the use of mutual inductance to simulate negative inductance in any arm. In further embodiments, an inductance may be connected in series with the shunt capacity, or an inductance, or capacity, may bridge the series arms. Further in order to make the image impedance more nearly a constant resistance and provide an adjustment of the insertion loss of the network, variable resistances may be bridged over the series arms and arranged in a common portion of the shunt arms.
Patent GB-492317-A (GB)
Title: Improvements in automobile oil-filters
IPC: F16G3/04
Filed: 1937-03-19
Abstract: 492,317. Filters. COMPTON, C. A. March 19, 1937, No. 8147. Convention date. March 25, 1936. [Class 46] An oil filter is provided with a removable cartridge comprising a casing 16 having a perforated bottom 17 through which the inlet pipe 12 passes and on which a screening member 33 carrying a deflector 40 rests. Above the member 33 are screening members 34 separated by a filtering medium 44 which is inserted in the form of pads which surround the flanges 39 of the screening members. Each pad consists of two layers of cotton batting with outer layers of cloth all stitched together. A ring-shaped member 25 retains the screens and pads in position, and the filter casing is closed by a cover 29. The filter may be attached to a supporting member such as the dashboard 51 of a vehicle by a band 52 which encircles the filter. A bolt 53 draws together the ends of the band which are secured to the support 51 by bolts 57.
Patent GB-1380681-A (GB)
Title: Production of segmented oxymethylene copolymers
IPC: C08G81/00
Filed: 1972-02-23
Abstract: 1380681 Oxymethylene block copolymers CELANESE CORP 23 Feb 1972 [1 March 1971] 8251/72 Headings C3P and C3R In the preparation of block copolymers comprising oxymethylene copolymer blocks coupled via urethane or ureide groups or their sulphur analogues to blocks derived from a different polymer, the coupling reaction is carried out in the presence of formaldehyde or a compound which generates formaldehyde under the coupling conditions more readily than the oxymethylene copolymer itself. The coupling may be carried out by reacting the oxymethylene copolymer with an isocyanate or isothiocyanate-terminated polymer, or with a polymer having active hydrogen-containing terminal groups and a polyfunctional isocyanate or isothiocyanate coupling agent. Preferably, the two polymers and the coupling agent, if used, are worked in the melt, optionally in the presence of a catalyst, e.g. a base, a Friedel- Crafts halide or an organic tin compound. A preferred source of formaldehyde is an unstabilized oxymethylene homopolymer having a mol. wt. of 200-3000. An example describes the reaction of a trioxan-ethylene oxide copolymer with an isocyanate-terminated polyurethane in the presence of such a homopolymer.
Patent GB-705183-A (GB)
Title: Shuttering for casting concrete
IPC: E04G9/04
Filed: 1951-04-10
Abstract: 705,183. Shuttering for casting concrete. WATSON, Ltd., W. & J. R., and WATSON, A. G. April 8, 1952 [April 10, 1951], No. 8291/51. Class 20 (2) A shuttering unit for casting concrete comprising a lining 10 adapted to engage the concrete and a cellular backing formed of interfitting boards 14, 15 at right angles, is provided along the outer edges with bolt holes 9 for joining the units together. Shuttering units for forming opposite sides of a wall mould are connected by ties comprising rods passing through cardboard tubes with wood blocks at each end in the moulding space and through the shuttering and walings exending over the outside of the shuttering.
Patent GB-1133115-A (GB)
Title: Improvements in or relating to a soil cultivating implement
IPC: A01B33/08
Filed: 1966-02-24
Abstract: 1,133,115. Agricultural implements. C. VAN DER LELY N.V. 24 Feb., 1966 [6 March, 1965], No. 8301/66. Heading A1B. A soil cultivating implement is provided with a hood 11 formed with openings 14 through which soil can pass. The openings are formed between resilient prongs 13 and a further hood 45 is provided. The tools may be replaced by flexible members. Scrapers may be provided on the tools to pass through the openings.
Patent GB-322539-A (GB)
Title: The manufacture and production of lacquers, filling or priming compositions and the like
IPC: C09D101/18
Filed: 1928-06-02
Abstract: 322,539. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). June 2, 1928. Divided on 322,466. Compositions containing cellulose derivatives. -Filling compositions comprise nitro-cellulose and resinous condensation products of aromatic dibasic acids with hydroxy-alkyl ethers of glycerols with glycols or glycerols. The resins may be obtained from phthalic or halogenated phthalic acids and the said hydroxy-alkyl ethers of glycerol or its homologues such as pentaglycerol CH3 C(CH2OH)2. The ethers may contain one to three hydroxy-alkyl groups either of a glycol or a glycerol. The compositions may also comprise soluble or insoluble colouring materials; fillers such as lithopone, ground slate, graphite, kieselguhr etc.; solvents; small proportions of cellulose aliphatic carboxylates such as cellulose acetate; softeners; natural or artificial resins such as condensation products of cyclic ketones, of urea and formaldehyde and of dibasic acids and polyhydric alcohols in a quantity not more than that of the essential resinous constituent. Solvents specified include lower glycol monoalkyl ethers and their lower fatty acid esters, such as acetates or formates, cyclic ketones such as cyclohexanone, diacetone alcohol, methyl acetate, lower alcohols, lower aliphatic ketones such as acetone, diethyl ketone &c. dioxane or its homologues, ethyl, butyl, amyl or cyclohexyl acetates, liquid hydrocarbons, especially those of the benzene series, methylene chloride or mixtures of these materials. Examples are given. The Provisional Specification also describes compositions comprising nitro-cellulose and resins from organic dibasic acids and hydroxy alkyl ethers of glycerol or glycol.
Patent GB-390185-A (GB)
Title: Improvements in or relating to the extraction of organic acids from their aqueous solutions
IPC: C07C51/487
Filed: 1931-06-23
Abstract: Acetic acid and its homologues such as butyric acid are extracted from their aqueous solutions by means of a phenol such as cresol, and the extract is heated so as to drive off the remaining water without decomposing the compound of the acid with the cresol, a temperature of 100-105 DEG  C. being suitable.  After the removal of all the water (with a little acid) in this manner, the acid is expelled by heating to a higher temperature (135-140 DEG  C.) to produce an anhydrous acid.  Specification 218,271, [Class 2 (iii), Dyes &c.], is referred to.
Patent GB-605923-A (GB)
Title: Devices for use in aiding bricklaying
IPC: E04G21/18
Filed: 1947-01-31
Abstract: 605,923. Bricklayersz lines. LAING, J. W., and LAMBERT, J. Jan. 31, 1947, No. 8408/46. [Class 20(ii)] Horizontal lines for bricklaying &c. are set up by mounting angle irons A at each corner of the proposed building, the angle irons at alternate corners having brackets B, Fig. 1, with hooks F for the lines whilst the other ends of the lines are coupled to line-tautening spindles H, Fig. 2, mounted on brackets B' on the angle irons at intermediate corners of the building. The brackets B, B' have jaw members D to engage the angle irons and are clamped by screws C. The spindles H may be bolts threaded in nuts I welded to the brackets and may be rotated by tommy bars L. The bolts are perforated at K to receive the line end. The brackets B<1> may have a cranked extension B<2>, Fig. 3, to carry an angled bar B', for locating the corners of the inner leaves of cavity walls W, W<1>.
Patent GB-1501291-A (GB)
Title: Telecommunications exchange having a line signalling bus external to its switching network
IPC: H04Q3/54
Filed: 1975-02-28
Abstract: 1501291 Automatic exchange systems COMPAGNIE INDUSTRIELLE DES TELECOMMUNICATIONS CIT-ALCATEL 28 Feb 1975 [7 March 1974] 08408/75 Heading H4K A telecommunications exchange includes switching network, a network control unit connected to input junctors, output junctors and registers over common signalling busses and signalling between the junctors or junctors and registers is effected over a said common signalling busses and via a said control unit. As described the invention is applied to a four-wire cross-bar transit exchange. The network is symmetrical about the centre stage GS and each connection is set up in duplicate using both halves of each matrix crosspoint through which a connection passes. Each ten contact crosspoint is split into two groups of five contacts four of which are used for each speech path, the fifth contacts being connected to vertical control wires connected to interrogation elements L3 used in the path search, a path being selected by a control circuit CC. For an outgoing call a free register AN is selected and connected to a calling line by a finder CH and when sufficient digits have been dialled a "test unit" L4 enables a unit NA requesting connection to a path selection circuit CC. Unit NA connects test unit L4 and other calling test units L1, L2 and L3 which indicate the state of break contacts in each of the switching line verticals, to the path selection circuit. The network is controlled by two processors G 1 and G2 each of which stores words specifying for each call, the calling and called junctors and the register employed. The processor seized for routing a call is freed immediately after setting up a call and is seized again when required for the exchange of line signals by the junctor on the side from which the signal comes. Each junctor and register circuit includes a relay assembly (Fig. 3, not shown) including a relay for each other circuit to which that circuit has access, a transmit relay and a receive relay. A circuit wishing to send signals connects a diode across a pair of terminals thus interconnecting a row conductor and a column conductor in an identification matrix (Fig. 4, not shown) in the associated processor. The processor emits the coded address of the calling circuit to a calling unit address decoder which marks the calling circuit transmitting potentials back to the processor via contacts characteristic of the identity of the circuit to which access is required. The latter is identified by the processor and similarly addressed.